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我想使HTML Canvas元素的宽度=浏览器窗口宽度,height =浏览器窗口高度。以下是我使用的代码。使HTML Canvas适合屏幕
HTML:
<body>
<canvas id="gameCanvas"></canvas>
<body />
JS:
function Main() {
this.canvas;
this.context;
this.canvasWidth;
this.canvasheight;
this.screenWidth;
this.screenHeight;
this.boxWidth;
this.boxHeight;
//This function is used to gather all required startup data
this.initalize = function (canvas) {
this.canvas = canvas;
this.context = this.canvas[0].getContext('2d');
}
//This function is used to size the canvas to the screen size
this.sizeCanvas = function() {
this.canvas.css("width", this.screenWidth + "px");
this.canvas.css("height", this.screenHeight + "px");
this.canvas[0].width = this.screenWidth;
this.canvas[0].height = this.screenHeight;
}
//This function is used to draw a stickman
this.drawStickMan = function (x, y) {
var headRadius = 0;
if (this.boxWidth < this.boxHeight) {
headRadius = this.boxWidth;
} else {
headRadius = this.boxHeight;
}
this.context.beginPath();
this.context.arc(x + this.boxWidth, y + this.boxHeight, headRadius, 0, 2 * Math.PI);
this.context.stroke();
console.log("run" + this.boxHeight);
}
//This function is run on page load, and when the screen resizes
this.resize = function() {
this.screenWidth = screen.width;
this.screenHeight = screen.height;
this.sizeCanvas();
this.canvasWidth = this.canvas[0].width;
this.canvasheight = this.canvas[0].height;
this.boxWidth = this.canvasWidth/16;
this.boxHeight = this.canvasheight/32;
this.drawStickMan(100, 100);
}
}
JS运行上面的类:无论
//This function is used to run the game
$(document).ready(function() {
var main = new Main();
main.initalize($("#gameCanvas"));
main.resize();
//run whenever screen size changes
$(window).resize(function() {
main.resize();
});
});
我似乎什么,我无法得到画布,以适应整个屏幕。我不确定画布不适合的原因。我相信问题出在sizeCanvas
函数中。
'position:absolute;顶部:0;左:0;宽度:100%;身高:100%;' – Martijn
[试试这个答案,或许可以解决你的问题](https://stackoverflow.com/a/3078427/6002328) –
@NagyIstván这是一个完美的解决方案。 – holycatcrusher